The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2014
Filed:
Dec. 22, 2005
Marco Frigerio, Milan, IT;
Flavio Casiraghi, Milan, IT;
Vincenzo Crisci, Milan, IT;
Gianbattista Grasselli, Milan, IT;
Jean-louis Pons, Milan, IT;
Alberto Bareggi, Milan, IT;
Marco Frigerio, Milan, IT;
Flavio Casiraghi, Milan, IT;
Vincenzo Crisci, Milan, IT;
Gianbattista Grasselli, Milan, IT;
Jean-Louis Pons, Milan, IT;
Alberto Bareggi, Milan, IT;
Prysmian Cavi e Sistemi Energia S.R.L., Milan, IT;
Abstract
A process for manufacturing an electric cable including at least one core including a conductor and an insulating coating surrounding the conductor includes the steps of: providing a polyolefin material, a silane-based cross-linking system and a foaming system including at least one exothermic foaming agent in an amount of 0.1% to 0.5% by weight with respect to the total weight of the polyolefin material; forming a blend with the polyolefin material, the silane-based cross-linking system and the foaming system; and extruding the blend on the conductor to form the insulating coating. An electric cable includes at least one core consisting of a conductor and an insulating coating surrounding the conductor and in contact therewith, the insulating coating consisting of a layer of expanded, silane-cross-linked polyolefin material having an expansion degree of 3% to 40%.